Quality-of-service driven power allocations for wireless full-duplex bidirectional links  

作　　者：CHENG WenChi ZHANG HaiLin 

机构地区：[1]State Key Laboratory of Integrated Services Networks Xidian University

出　　处：《Science China(Information Sciences)》2014年第4期164-173,共10页中国科学（信息科学）（英文版）

基　　金：supported by 111 Project in Xidian University of China(Grant No.B08038);Important National Science and Technology Specific Projects(Grants Nos.2011ZX0300300104,2012ZX03003012);National Natural Science Foundation of China(Grant No.61072069);Fundamental Research Funds for Central Universities(Grant No.72125377)

摘　　要：Wireless full-duplex transmission has the potential to double the system throughput compared with the conventional half-duplex transmission. To achieve the maximum potential system throughput, optimal power allocation taking into account quality-of-service （QoS） is urgently needed. In this paper, we propose the QoS driven power allocation schemes for wireless full-duplex bidirectional links. By integrating information theory with tile statistical QoS principle, we build two models - local transmit power related self-interference （LTPRS） model and local transmit power unrelated self-interference （LTPUS） model to analyze the wireless flfll-duplex transmission. For both of these two models, we derive tile optimal power allocation schemes, which aim at maximizing the system throughput subject to tile given delay-QoS constraint, over wireless bidirectional links with full-duplex transmission. The analyses and numerical results verify that our proposed power allocation scheme （：an efficiently support diverse QoS requirements over wireless bidirectional links. Our proposed full- duplex QoS driven power allocation schemes can obtain larger effective capacity compared with the conventional half-duplex transmission over wireless bidirectional links.Wireless full-duplex transmission has the potential to double the system throughput compared with the conventional half-duplex transmission. To achieve the maximum potential system throughput, optimal power allocation taking into account quality-of-service （QoS） is urgently needed. In this paper, we propose the QoS driven power allocation schemes for wireless full-duplex bidirectional links. By integrating information theory with tile statistical QoS principle, we build two models - local transmit power related self-interference （LTPRS） model and local transmit power unrelated self-interference （LTPUS） model to analyze the wireless flfll-duplex transmission. For both of these two models, we derive tile optimal power allocation schemes, which aim at maximizing the system throughput subject to tile given delay-QoS constraint, over wireless bidirectional links with full-duplex transmission. The analyses and numerical results verify that our proposed power allocation scheme （：an efficiently support diverse QoS requirements over wireless bidirectional links. Our proposed full- duplex QoS driven power allocation schemes can obtain larger effective capacity compared with the conventional half-duplex transmission over wireless bidirectional links.

关 键 词：full-duplex quality-of-service （QoS） power allocation SELF-INTERFERENCE wireless bidirectionallinks convex optimization 

分 类 号：TN92[电子电信—通信与信息系统]